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https://issues.apache.org/jira/browse/CASSANDRA-9794?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14625685#comment-14625685
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Andrey Konstantinov commented on CASSANDRA-9794:
------------------------------------------------
I have also tried Simple strategy and NetworkTopologyStrategy. An issue is
observable with both.
> Linearizable consistency for lightweight transactions is not achieved
> ---------------------------------------------------------------------
>
> Key: CASSANDRA-9794
> URL: https://issues.apache.org/jira/browse/CASSANDRA-9794
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Environment: Client: windows, datastax C# driver, application attached
> Server: single node, datastax community edition 2.1.7, ubuntu (but same
> happens with datastax community windows)
> Reporter: Andrey Konstantinov
> Attachments: Cassandra.LocksTest.7z
>
>
> I run into an issue with unexpected behavior of lightweight transactions. I
> am not sure whether it is a Cassandra bug, C# driver bug or I am doing
> something wrong. Please, help me to find the right direction.
> I am attaching windows application and sources reproducing the following
> issues.
> 1) INSERT IF NOT EXISTS returns TRUE, when a record has not been applied (run
> a client in mode "local" or "persisted" and observe an exception)
> 2) INSERT IF NOT EXISTS returns FALSE, when a record has been applied (run a
> client in mode "local" or "persisted" and observe hanged application)
> 3) The same issues with conditional UPDATE (run a client in mode "embedded"
> and observe either an exception or hanged application)
> 4) SELECT with SERIAL consistency level does not return the latest record
> (run a client in mode "persisted" or "embedded" and observe an exception
> about mismatched counters)
> The client sources have got comments pointing out to 4 problems, where, I
> think, an error happens. The application can be run with 3 different modes
> ("local", "persisted", "embedded") trying the same thing from different
> perspectives.
> Note: I run into a problem with setting SERIAL consistency level for SELECT
> queries using C# datastax driver. So, I patched it temporary. Diff file as
> well as the compiled driver are placed within the application packages
> folder. It would be great, if you could point me out if I am doing something
> wrong with the driver API or if this issue should be reported to datastax.
> Note: I am not sure if I followed all the rules submitting an issue, so,
> please, adjust necessary fields. I am happy to submit more information,
> please, let me know what I should check/do...
> Thanks,
> Andrey
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